13135256 has 8 divisors (see below), whose sum is σ = 24628620. Its totient is φ = 6567624.

The previous prime is 13135247. The next prime is 13135279. The reversal of 13135256 is 65253131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820946 + ... + 820961.

Almost surely, 2^13135256 is an apocalyptic number.

It is an amenable number.

13135256 is a deficient number, since it is larger than the sum of its proper divisors (11493364).

13135256 is a wasteful number, since it uses less digits than its factorization.

13135256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641913 (or 1641909 counting only the distinct ones).

The product of its digits is 2700, while the sum is 26.

The square root of 13135256 is about 3624.2593726167. The cubic root of 13135256 is about 235.9461238694.

Adding to 13135256 its reverse (65253131), we get a palindrome (78388387).

The spelling of 13135256 in words is "thirteen million, one hundred thirty-five thousand, two hundred fifty-six".